startle response


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startle response

[′stärd·əl ri‚späns]
(physiology)
The complex, involuntary, usually spasmodic psychophysiological response movement of an organism to a sudden unexpected stimulus.
References in periodicals archive ?
Habituation of the ultrasound-induced Acoustic startle response in flying crickets.
In the minor form, the startle response is exaggerated without any additional symptoms such as generalised stiffness.
Persistent symptoms of increased arousal (not present before the trauma), as indicated by 2 (or more) of the following: * Difficulty falling or staying asleep * Irritability or outbursts of anger * Difficulty concentrating * Hypervigilance * Exaggerated startle response E.
As expected, knock-in of this mutant subunit gene had the opposite effect of deleting the [beta]2 nAChR gene: Mice expressing the hyperexcitable [alpha]4 nAChR gene were more sensitive to alcohol's ability to depress the acoustic startle response than were animals expressing the normal [alpha]4 nAChR gene.
A double-blind, placebo-controlled study on the effects of Gotu Kola (Centella asiatica) on acoustic startle response in healthy subjects.
These can include severely disorganized or agitated behavior, flashbacks, repetitive play expressing traumatic themes, frightening dreams and other sleep disturbances, intense distress when reminded of the traumatic event, extreme withdrawal, outbursts of anger, and an exaggerated startle response.
Fatigue, exhaustion, insomnia, cardiovascular strain, startle response, hyperarousal, increased physical pain, reduced immune response, headaches, gastrointestinal upset, decreased appetite, decreased libido, or vulnerability to illness.
The assessment acknowledges that sonic booms "could cause a startle response and temporary hearing impairment to birds and mammals," but ruled that this would not "affect the viability or diversity of the wildlife population.
The startle response develops slowly, sometimes even up to six months after the event.
For example, is the startle response (head thrown back, mouth open and eyes wide) a part of a "natural language"?
They also may be prone to insomnia, irritability or outbursts of anger, difficulty concentrating, and an exaggerated startle response.
Parker, age 6l, diagnosed with multi-infarct dementia, displays an exaggerated startle response.